How to edit custom css In Magento 2 and we using porto theme ?
I'm using this code base theme working
app/design/frontend/vendor_name/theme_name
run below command to set developer mode
php bin/magento deploy:mode:set developer
and clear cache and deploy static-content
php bin/magento cache:clean
php bin/magento setup:static-content:deploy
But porto theme not working
Best Answer
We are using Same Porto Theme.
I recommend do not make changes in Porto Theme. Because they are upgrading their Versions. Once you upgrade to their latest version, your changes will be given.
So create your theme, by setting Porto as Parent.
For how to create theme
http://devdocs.magento.com/guides/v2.1/frontend-dev-guide/themes/theme-create.html
Magento 2: How to override Luma Theme Home Page
magento\app\design\frontend\My\theme_name\theme.xml
At the End Run below commands